Semiconductor integrated circuit of low power consumption type

Abstract

A semiconductor integrated circuit of a low power consumption type has modules (1) to which various supply voltages are provided. In each module (1), cells (3) are grouped into cell rows or cell columns. Only one of a wire (7) of a high supply voltage and a wire (5) of a low supply voltage is formed on each cell row or cell column in the module (1). Various supply voltages are provided into the target cell (3) through the electrical wires (5, 7).

What is claimed is: 
     
       1. A semiconductor integrated circuit of a low power consumption type that operates under a plurality of supply voltages, comprising: a plurality of modules, each module comprising a plurality of random logic cells including cells operating under the plurality of supply voltages different from each other, and the plurality of random logic cells being arranged in a plurality of cell rows or cell columns; and   electrical wires, each wire being formed on each of the plurality of cell rows or cell columns,   wherein one of the plurality of supply voltages is provided to each cell row or each cell column in the plurality of cell rows or cell columns through each of the electrical wires formed on the cell row or cell column.   
     
     
       2. A semiconductor integrated circuit of a low power consumption type as claimed in claim 1, wherein each of the plurality of modules comprises cell rows or cell columns having random logic cells and arranged in a center section of the module and cell rows or cell columns arranged in a peripheral section of the center section of the module, and wherein one supply voltage in the plurality of supply voltages is provided to the cell rows or cell columns arranged in the center section of the module and other supply voltage which is lower than said one supply voltage is provided to the cell rows or cell columns arranged in the peripheral section of the center section of the module. 
     
     
       3. A semiconductor integrated circuit of a low power consumption type as claimed in claim 1, wherein each module in the plurality of modules comprises: first cell rows or cell columns having random logic cells, to which a first supply voltage in the plurality of supply voltages is provided, for performing data input/output operation inside of this module; and   second cell rows or cell columns having random logic cells, to which a second supply voltage which is lower than said first supply voltage in the plurality of supply voltages is provided, for performing data input/output operation to outside of this module.   
     
     
       4. A semiconductor integrated circuit of a low power consumption type as claimed in claim 2, wherein each module in the plurality of modules comprises: first cell rows or cell columns, to which a first supply voltage in the plurality of supply voltages is provided, for performing data input/output operation inside of this module; and   second cell rows or cell columns, to which a second supply voltage in the plurality of supply voltages is provided, for performing data input/output operation to outside of this module.   
     
     
       5. A semiconductor integrated circuit of a low power consumption type that operates under a plurality of supply voltages different from each other, comprising: a plurality of modules, each module comprising a plurality of cells having random logic cells and including cells that operate under the plurality of supply voltages, and the plurality of random logic cells being arranged in a plurality of cell rows or cell columns;   electrical wires, each wire being formed on each of the plurality of cell rows or cell columns; and   a voltage generation section for generating the plurality of supply voltages and for providing the plurality of supply voltages to the plurality of modules,   wherein one of the plurality of supply voltages generated by the voltage generation section is provided to each cell row or each cell column in the plurality of cell rows or cell columns through each of the electrical wires formed on the cell row or cell column.   
     
     
       6. A semiconductor integrated circuit of a low power consumption type as claimed in claim 5, wherein the voltage generation section generates and provides a different supply voltage to each cell row or each cell column forming each module in the plurality of modules. 
     
     
       7. A semiconductor integrated circuit of a low power consumption type that operates under a plurality of supply voltages, comprising: a plurality of modules, each module comprising a plurality of cells including cells that operates under the plurality of supply voltages, and the plurality of cells being arranged in a plurality of cell rows or cell columns;   first wires, each first wire being formed on each of the plurality of cell rows or cell columns and through which one of the plurality of supply voltages is provided to each cell row or each cell column in the plurality of cell rows or cell columns;   second wires, each second wire being formed in a direction being perpendicularly intersecting to the direction of each cell row or cell column in each module, and through which other supply voltage in the plurality of supply voltages is provided to each cell row or each cell column in the plurality of cell rows or cell columns; and   a plurality of pairs of power cells and filler cells arranged in a plurality of rows or columns, each row or column of the power cells and the filler cells arranged along a direction that being in parallel to the direction of the second wires and being perpendicularly intersecting to the direction of each cell row or cell column in each module, the power cell providing one of the plurality of supply voltage and the filler cell preventing the supply of the supply voltage, and each pair of power cell and filler cell being formed at each cross section of each first wire and each second wire on each cell row or cell column, and one of the plurality of supply voltages being provided to each cell in each cell row or cell column through the power cell.   
     
     
       8. A semiconductor integrated circuit of a low power consumption type as claimed in claim 7, wherein each of the plurality of modules comprises cell rows or cell columns arranged in a center section of the module and cell rows or cell columns arranged in a peripheral section of the center section of the module, and wherein one supply voltage in the plurality of supply voltages is provided to the cell rows or cell columns arranged in the center section of the module and other supply voltage is provided to the cell rows or cell columns arranged in the peripheral section of the center section of the module. 
     
     
       9. A semiconductor integrated circuit of a low power consumption type as claimed in claim 7, wherein each module in the plurality of modules comprises: first cell rows or cell columns, to which a first supply voltage in the plurality of supply voltages is provided, for performing data input/output operation inside of this module; and   second cell rows or cell columns, to which a second supply voltage in the plurality of supply voltages is provided, for performing data input/output operation to outside of this module.   
     
     
       10. A semiconductor integrated circuit of a low power consumption type as claimed in claim 7, further comprises a voltage generation section for generating the plurality of supply voltages and for providing the plurality of supply voltages to the plurality of modules, wherein one of the plurality of supply voltages generated by the voltage generation section is provided to each cell row or each cell column in the plurality of cell rows or cell columns through each of the electrical wires formed on the cell row or cell column.   
     
     
       11. A semiconductor integrated circuit of a low power consumption type as claimed in claim 10, wherein the voltage generation section generates and provides a different supply voltage to each cell row or each cell column forming each module in the plurality of modules. 
     
     
       12. A semiconductor integrated circuit comprising: a plurality of random logic cells arranged in a plurality of rows or columns; and   a plurality of power supply lines for supplying a normal supply voltage to said random logic cells,   wherein power consumption of said semiconductor integrated circuit is reduced by providing power supply lower voltage lines for supplying a lowered supply voltage lower than said normal supply voltage, wherein a part of said random logic cells are supplied power through said power supply lower voltage lines instead of said power supply lines, and wherein said part of said random logic cells can be normally operated even with said lowered supply voltage.